[PATCH] pcihp_skeleton.c cleanup

This patch cleans up pcihp_skelton.c as follows.

  o Move slot name area into struct slot.
  o Replace kmalloc with kzalloc and clean up the arg of sizeof()
  o Fix the wrong use of get_*_status() functions.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/pci/hotplug/pcihp_skeleton.c b/drivers/pci/hotplug/pcihp_skeleton.c
index 3194d51c6ec9c6109b20a4eb7c5821d7010f2d3c..0a46f549676a4287e32487bdfc19d5896e442ec7 100644 (file)
--- a/drivers/pci/hotplug/pcihp_skeleton.c
+++ b/drivers/pci/hotplug/pcihp_skeleton.c
@@ -37,10 +37,12 @@
 #include <linux/init.h>
 #include "pci_hotplug.h"
 
+#define SLOT_NAME_SIZE 10
 struct slot {
        u8 number;
        struct hotplug_slot *hotplug_slot;
        struct list_head slot_list;
+       char name[SLOT_NAME_SIZE];
 };
 
 static LIST_HEAD(slot_list);
@@ -233,12 +235,10 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
 
        dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
        kfree(slot->hotplug_slot->info);
-       kfree(slot->hotplug_slot->name);
        kfree(slot->hotplug_slot);
        kfree(slot);
 }
 
-#define SLOT_NAME_SIZE 10
 static void make_slot_name(struct slot *slot)
 {
        /*
@@ -257,7 +257,6 @@ static int __init init_slots(void)
        struct slot *slot;
        struct hotplug_slot *hotplug_slot;
        struct hotplug_slot_info *info;
-       char *name;
        int retval = -ENOMEM;
        int i;
 
@@ -266,31 +265,23 @@ static int __init init_slots(void)
         * with the pci_hotplug subsystem.
         */
        for (i = 0; i < num_slots; ++i) {
-               slot = kmalloc(sizeof(struct slot), GFP_KERNEL);
+               slot = kzalloc(sizeof(*slot), GFP_KERNEL);
                if (!slot)
                        goto error;
-               memset(slot, 0, sizeof(struct slot));
 
-               hotplug_slot = kmalloc(sizeof(struct hotplug_slot),
-                                       GFP_KERNEL);
+               hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL);
                if (!hotplug_slot)
                        goto error_slot;
-               memset(hotplug_slot, 0, sizeof (struct hotplug_slot));
                slot->hotplug_slot = hotplug_slot;
 
-               info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
+               info = kzalloc(sizeof(*info), GFP_KERNEL);
                if (!info)
                        goto error_hpslot;
-               memset(info, 0, sizeof (struct hotplug_slot_info));
                hotplug_slot->info = info;
 
-               name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
-               if (!name)
-                       goto error_info;
-               hotplug_slot->name = name;
-
                slot->number = i;
 
+               hotplug_slot->name = slot->name;
                hotplug_slot->private = slot;
                hotplug_slot->release = &release_slot;
                make_slot_name(slot);
@@ -300,16 +291,16 @@ static int __init init_slots(void)
                 * Initialize the slot info structure with some known
                 * good values.
                 */
-               info->power_status = get_power_status(slot);
-               info->attention_status = get_attention_status(slot);
-               info->latch_status = get_latch_status(slot);
-               info->adapter_status = get_adapter_status(slot);
+               get_power_status(hotplug_slot, &info->power_status);
+               get_attention_status(hotplug_slot, &info->attention_status);
+               get_latch_status(hotplug_slot, &info->latch_status);
+               get_adapter_status(hotplug_slot, &info->adapter_status);
                
                dbg("registering slot %d\n", i);
                retval = pci_hp_register(slot->hotplug_slot);
                if (retval) {
                        err("pci_hp_register failed with error %d\n", retval);
-                       goto error_name;
+                       goto error_info;
                }
 
                /* add slot to our internal list */
@@ -317,8 +308,6 @@ static int __init init_slots(void)
        }
 
        return 0;
-error_name:
-       kfree(name);
 error_info:
        kfree(info);
 error_hpslot: